Ionia Weather Forecast

    • 67
    • 75

    Rain Showers

    • 68
    • 82

    Chance Thunderstorms

    • 66
    • 85

    Rain Showers

    • 61
    • 79

    Chance Rain Showers

    • 59
    • 74

    Partly Sunny

    • 56
    • 71

    Partly Sunny

Today 31 Aug Ontario

Showers likely late this Morning, then Showers with a chance of Thunderstorms this afternoon. Highs Ranging from around 70 on the Hilltops to the mid 70s across the lower Elevations. Light south Winds. Chance of rain 90 percent.

Tonight 31 Aug Ontario

Showers with a chance of Thunderstorms. Warm and muggy with Lows in the upper 60s. Light southwest Winds. Chance of rain 90 percent.

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  • Temperature Real-Time

Ionia Temperature Statistics

August Temperature

Rochester, Greater Rochester International Airport (15.5 miles)

  • Lowest 29 August, 2026

    50 °F

  • Average August

    70.7 °F

  • Highest 5 August, 2026

    87.7 °F

Climate (2021–2026)

Rochester, Greater Rochester International Airport (15.5 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.5 °F
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